Lori, welcome to OCF. I have responded on a couple of your other posts. If you are checking out other inactive forums, their info could be outdated. Plus it may not be monitored and checked for accuracy. OCF abides by the Health on the Net Code which ensures correct medical info is given. Not all medical websites can say they are good enough to have that honor.
Not all oral cancer patients ever find out why they ended up getting oral cancer. There are quite a few around here with no known cause. It could be anything that causes the cancer, maybe the tongue was just your husbands weakest spot so thats where it grew, or it could be just his body being predetermined to getting oral cancer, there are a million reasons. Regardless of why he got OC, he has it and the treatments are the same weather it is
HPV+ or if he got it from smoking or no known cause. Years from now things probably will change but at this time everyone goes thru the same treatments.
Here is a list of easier to eat foods. They mostly have a smoother consistance and are more mild than more other foods.
easy to Eat Foods List When adding things out of the ordinary, like the extract, please check with the doc. There are many things that can interfere with treatments so always be safe and ask the doc if its ok. Im one who is always very cautious about everything, you can never be too careful. If something would have a negative impact or even worse affect the effectiveness of treatment then it could be a dangerous situation. It doesnt hurt to ask the doc about things. It keeps them on their toes

Best wishes with everything!!!